| 摘要 |
PROBLEM TO BE SOLVED: To reduce the man-fours of cutting and metal mold cost by fitting a shoe at the central part thereof by locking members arranged lengthways in the advancing direction and making a part of projecting parts of the locking members of the back surface of the shoe come into a recessed groove of a guide rail to guide them. SOLUTION: A shoe 2 in the shape of a rectangular flat plate is fitted to a down surface plate on the rear side of a front surface plate lower flange part 1C of a flight 1 by bolts 3, 3 arranged lengthways on the straight line in the advancing direction of the flight 1 in the central part of the shoe 2. The bolts 3, 3 are screwed into nuts 4 arranged on the recessed part on the down surface side of the shoe 2, and head thereof 3A, 3A form projecting parts on the down surface side of the she 2, and the bolt heads 3A, 3A of the projecting parts have the same diameter and the same outline size, and they come into recessed groove 5A of a guide rail 5. When the flight 1 moved with the traveling of a chain, the projecting part 3A moves in the recessed groove 5A of the guide rail 5 to make it a guide member. In this way, a guiding bracing flange part and an exclusive metal mold are not needed, thereby the shoe 2 can be easily produced to reduce its manufacturing cost.
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